Mixing DDR3 RAM with different CAS Latency?

This is a discussion on Mixing DDR3 RAM with different CAS Latency? within the Tech Board forums, part of the Community Boards category; It's unclear what your configuration is set up as, but my guess would be that your system is picking a ...

At what speed is this, and is your DRAM : FSB ratio 1:1? Have you tried overvolting a bit to get the modules to run tighter timings?

I'm running at 1066MHz. I'm attaching some pictures of my cpu-z results for the CPU and Memory tabs as well as the SPD for both types of RAM.

As for changing the memory voltage. I can't see how to do that in my BIOS. The only thing that mentions voltage only goes up to 1.0V. I'm not sure what that does.

Based on these pics, does it look like I should be running my RAM at 1333 or 1066 to match my FSB? BTW, the CPU multiplier will automatically adjust itself between x6 and x9 depending on the CPU load (one of the features of my motherboard).

I'm running at 1066MHz. I'm attaching some pictures of my cpu-z results for the CPU and Memory tabs as well as the SPD for both types of RAM.

As for changing the memory voltage. I can't see how to do that in my BIOS. The only thing that mentions voltage only goes up to 1.0V. I'm not sure what that does.

Based on these pics, does it look like I should be running my RAM at 1333 or 1066 to match my FSB? BTW, the CPU multiplier will automatically adjust itself between x6 and x9 depending on the CPU load (one of the features of my motherboard).

Which mobo are you using? The memory voltage would typically be called vDimm og vRAM, to run your RAM at 1:1 you only need 266mHz, right now they are twice as fast (hence the 1:2 FSB : DRAM ratio in CPU-z)

But those mem modules are rated much higher than what they are running right now, try to force the timings in BIOS.

The dynamic CPU multiplier is not a feature of your motherboard, all socket 775 CPUs have this feature, or atleast all Core 2s, it's called EIST.